diff --git a/math/py-gau2grid/Makefile b/math/py-gau2grid/Makefile
index 502edcb3d1c1..04957f3fe134 100644
--- a/math/py-gau2grid/Makefile
+++ b/math/py-gau2grid/Makefile
@@ -1,39 +1,39 @@
 PORTNAME=	gau2grid
 DISTVERSIONPREFIX=	v
-DISTVERSION=	2.0.7
-PORTREVISION=	4
+DISTVERSION=	2.0.9
 CATEGORIES=	math python
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Fast computation of a gaussian and its derivative on a grid
 WWW=		https://github.com/dgasmith/gau2grid
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}numpy>=1.16:math/py-numpy@${PY_FLAVOR} \
 		cmake:devel/cmake-core
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}numpy>=1.16:math/py-numpy@${PY_FLAVOR}
 TEST_DEPENDS=	${PYTHON_PKGNAMEPREFIX}pytest>0:devel/py-pytest@${PY_FLAVOR}
 
 USES=		cmake compiler:c11 python
 USE_GITHUB=	yes
 GH_ACCOUNT=	dgasmith
 USE_PYTHON=	flavors
 
 CMAKE_ON=	INSTALL_PYMOD
 CMAKE_ARGS=	-DPYMOD_INSTALL_LIBDIR:STRING=${PYTHON_SITELIBDIR} -DFREEBSD_PYTHON_VER:STRING=${PYTHON_VER}
 
 OPTIONS_DEFINE=		NATIVE
 
 NATIVE_CMAKE_BOOL=	ENABLE_XHOST
 
 post-install:
 	@${RM} -r ${STAGEDIR}${PYTHON_SITELIBDIR}/gau2grid/__pycache__
+	@${RM} ${STAGEDIR}${PYTHON_SITELIBDIR}/gau2grid/LICENSE
 	@${RM} -r ${STAGEDIR}${LOCALBASE}//lib/usr # LICENSE is installed under there
 
 do-test:
 	@cd ${WRKSRC} && ${PYTHON_CMD} -m pytest
 
 .include <bsd.port.mk>
diff --git a/math/py-gau2grid/distinfo b/math/py-gau2grid/distinfo
index 17ee9ff57536..d6378b5a4741 100644
--- a/math/py-gau2grid/distinfo
+++ b/math/py-gau2grid/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1610499660
-SHA256 (dgasmith-gau2grid-v2.0.7_GH0.tar.gz) = 66e7205646e1e3685e5dd4eea8281fc92b0b8b45ce97ae24b72a09e15a3fd62f
-SIZE (dgasmith-gau2grid-v2.0.7_GH0.tar.gz) = 84398
+TIMESTAMP = 1780987642
+SHA256 (dgasmith-gau2grid-v2.0.9_GH0.tar.gz) = 7879bdddf3a52cd2a051086215977822bbe8d1af927fcf5b4fb0256a38b8a76c
+SIZE (dgasmith-gau2grid-v2.0.9_GH0.tar.gz) = 82540
diff --git a/math/py-gau2grid/files/patch-CMakeLists.txt b/math/py-gau2grid/files/patch-CMakeLists.txt
index e3c96f8eab3b..00101a6c4ab0 100644
--- a/math/py-gau2grid/files/patch-CMakeLists.txt
+++ b/math/py-gau2grid/files/patch-CMakeLists.txt
@@ -1,42 +1,56 @@
---- CMakeLists.txt.orig	2020-12-15 13:54:30 UTC
+--- CMakeLists.txt.orig	2026-06-09 06:48:58 UTC
 +++ CMakeLists.txt
-@@ -51,7 +51,7 @@ message(STATUS "gau2grid install: ${CMAKE_INSTALL_PREF
+@@ -51,17 +51,14 @@ message(STATUS "gau2grid install: ${CMAKE_INSTALL_PREF
+ message(STATUS "gau2grid install: ${CMAKE_INSTALL_PREFIX}")
  
  #  <<  Python  >>
- set(Python_ADDITIONAL_VERSIONS 3.9 3.8 3.7 3.6 3.5)  # adjust with CMake minimum FindPythonInterp
--find_package(PythonLibsNew 3.6 REQUIRED)
-+find_package(PythonLibsNew ${FREEBSD_PYTHON_VER} REQUIRED)
- message(STATUS "${Cyan}Found Python ${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}${ColourReset}: ${PYTHON_EXECUTABLE} (found version ${PYTHON_VERSION_STRING})")
- 
- 
-@@ -110,6 +110,7 @@ target_include_directories(gg INTERFACE
+-find_package(Python 3.6 REQUIRED COMPONENTS Interpreter)
++find_package(Python ${FREEBSD_PYTHON_VER} REQUIRED COMPONENTS Interpreter)
+ message(STATUS "${Cyan}Found Python ${Python_VERSION_MAJOR}.${Python_VERSION_MINOR}${ColourReset}: ${Python_EXECUTABLE} (found version ${Python_VERSION})")
+ 
+ 
+ ################################  Main Project  ################################
+ add_custom_command(
+     OUTPUT  gau2grid/gau2grid.h gau2grid_orbital.c gau2grid_phi.c gau2grid_deriv1.c gau2grid_deriv2.c gau2grid_deriv3.c gau2grid_transform.c gau2grid_helper.c
+-    COMMAND Python::Interpreter -c "import sys; \
+-                                     sys.path.append('${PROJECT_SOURCE_DIR}'); \
+-                                     import gau2grid as gg; \
+-                                     gg.c_gen.generate_c_gau2grid(${MAX_AM}, path='${CMAKE_CURRENT_BINARY_DIR}')"
++    COMMAND Python::Interpreter -c "import sys;                                      sys.path.append('${PROJECT_SOURCE_DIR}');                                      import gau2grid as gg;                                      gg.c_gen.generate_c_gau2grid(${MAX_AM}, path='${CMAKE_CURRENT_BINARY_DIR}')"
+     DEPENDS gau2grid/c_generator.py
+             gau2grid/c_generator.py
+             gau2grid/codegen.py
+@@ -117,6 +114,7 @@ target_include_directories(gg PUBLIC
                             $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
  
  # GNUInstallDirs "DATADIR" wrong here; CMake search path wants "share".
 +if (FALSE) # see https://github.com/dgasmith/gau2grid/issues/39#issuecomment-457856365
  set(CMAKECONFIG_INSTALL_DIR "share/cmake/${PN}")
  configure_package_config_file(cmake/${PN}Config.cmake.in
                                "${CMAKE_CURRENT_BINARY_DIR}/${PN}Config.cmake"
-@@ -139,6 +140,7 @@ if(${NATIVE_PYTHON_INSTALL_WITH_LIB} OR (NOT(${INSTALL
+@@ -148,6 +146,7 @@ endif()
             NAMESPACE "${PN}::"
             FILE "${PROJECT_BINARY_DIR}/${PN}Targets.cmake")
  endif()
 +endif()
  
  if(${INSTALL_PYMOD})
      if(${NATIVE_PYTHON_INSTALL})
-@@ -162,12 +164,12 @@ if(${INSTALL_PYMOD})
+@@ -171,14 +170,14 @@ if(${INSTALL_PYMOD})
                      OUTPUT_STRIP_TRAILING_WHITESPACE)
  
      install(DIRECTORY gau2grid
 -            DESTINATION ${CMAKE_INSTALL_LIBDIR}${PYMOD_INSTALL_LIBDIR}
 +            DESTINATION ${PYMOD_INSTALL_LIBDIR}
              USE_SOURCE_PERMISSIONS
              FILES_MATCHING PATTERN "*.py")
  
      install(FILES $<TARGET_FILE:gg>
 -            DESTINATION ${CMAKE_INSTALL_LIBDIR}${PYMOD_INSTALL_LIBDIR}/gau2grid
 +            DESTINATION ${PYMOD_INSTALL_LIBDIR}/gau2grid
              RENAME "gg${PYLIB_EXTENSION}")
  
      install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/LICENSE
+-            DESTINATION ${CMAKE_INSTALL_LIBDIR}${PYMOD_INSTALL_LIBDIR}/gau2grid)
++            DESTINATION ${PYMOD_INSTALL_LIBDIR}/gau2grid)
+ endif()